Two dead after car plunges off Melb bridge

Two people are dead after their car crashed off the side of a high bridge in Melbourne and burst into flames in what may have been a street race.

Victoria Police were told two cars were seen travelling at high speed along the Western Ring Road about 1.30am on Wednesday before one of the drivers lost control on the 55m-high E J Whitten Bridge and crashed off the side.

One eyewitness told the 3AW described the crash as "like watching a movie".

"They gave me a fright, they were going that hard," "Paul", who immediately called 000, told the radio station.

Emergency services subsequently found two dead in the car; the other vehicle is believed to have stopped at the scene.

The south-bound lanes at the bridge in Keilor East are expected to remain closed until late Wednesday morning.